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many of you may have felt, one of the features of this rainy season is that rain is pouring more strongly at dawn.

Reporter Dong-Gyun Seo will explain in detail why the water vapor that constantly pushes into the central region suddenly turns into rain and pours at dawn.

<Reporter>

This is the layout of the air pressure surrounding Korea today (3rd).

A lot of water vapor flows along the edge of the high pressure in the North Pacific Ocean, but you can see the fourth storm typhoon'Hagupit' that occurred in the southern sea of ​​Okinawa, Japan, pushing the water vapor further.


However, at the dawn of the poison, this water vapor is developing into a rain cloud.

Up to 80 mm/hour of rain was poured into Yeoju, Gyeonggi-do and Cheorwon, Gangwon-do only at dawn today.

Up to 80% of the rain that falls until afternoon is concentrated at dawn.

This phenomenon is closely related to temperature and wind.

At night, when the temperature drops, water vapor is more easily transformed into raindrops.

In addition, the wind over 1.5km carrying water vapor is weakened by the disturbance of turbulence caused by sunlight during the day, but at night when the turbulence disappears, it becomes stronger and supplies more water vapor.

The prolonged rainy season is due to the fact that the cold air in the north and the warm high pressure in the south have similar forces, and they are struggling in the central region.

Typhoon'Hagupit', which adds strength to the rainy season, will land in southern China tomorrow morning and weaken its power.

However, even after it is extinguished, water vapor is supplied to the central portion, and up to 500 mm of rain is expected to continue in the middle.

(Video editing: Park Ji-in, CG: Kyu-yeon Kim, Seung-hyun Seo)